package Demo2;

public class Test {
    public static void main(String[] args) {
        Cat cat = new Cat("小黄",3);
        //Dog dog = new Dog("泰迪",2);
        cat.eat();
        int a = 10;
        a = 20;
        a  =30;
        final int b = 100;
        //b = 200;
    }
}
